diff --git a/src/db/unit_tests/dbDeepRegionTests.cc b/src/db/unit_tests/dbDeepRegionTests.cc
index 9a4a90708..02391876b 100644
--- a/src/db/unit_tests/dbDeepRegionTests.cc
+++ b/src/db/unit_tests/dbDeepRegionTests.cc
@@ -32,6 +32,7 @@
 #include "dbDeepShapeStore.h"
 #include "dbOriginalLayerRegion.h"
 #include "dbCellGraphUtils.h"
+#include "dbTestSupport.h"
 #include "tlUnitTest.h"
 #include "tlStream.h"
 
@@ -1776,21 +1777,21 @@ TEST(30a_interact_with_count_region)
   r.set_merged_semantics (false);
 
   EXPECT_EQ (r.selected_interacting (empty).to_string (), "");
-  EXPECT_EQ (r.selected_interacting (rr).to_string (), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)");
+  EXPECT_EQ (db::compare (r.selected_interacting (rr), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)"), true);
   EXPECT_EQ (r.selected_interacting (rr, 0, 2).to_string (), "(0,0;0,200;100,200;100,0)");
   EXPECT_EQ (r.selected_interacting (rr, 1, 2).to_string (), "(0,0;0,200;100,200;100,0)");
-  EXPECT_EQ (r.selected_interacting (rr, 1, 4).to_string (), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)");
-  EXPECT_EQ (r.selected_interacting (rr, 2, 4).to_string (), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)");
+  EXPECT_EQ (db::compare (r.selected_interacting (rr, 1, 4), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)"), true);
+  EXPECT_EQ (db::compare (r.selected_interacting (rr, 2, 4), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)"), true);
   EXPECT_EQ (r.selected_interacting (rr, 2, 1).to_string (), "");
   EXPECT_EQ (r.selected_interacting (rr, 3, 4).to_string (), "(-100,-100;-100,0;0,0;0,-100)");
 
-  EXPECT_EQ (r.selected_not_interacting (empty).to_string (), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)");
+  EXPECT_EQ (db::compare (r.selected_not_interacting (empty), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)"), true);
   EXPECT_EQ (r.selected_not_interacting (rr).to_string (), "");
   EXPECT_EQ (r.selected_not_interacting (rr, 0, 2).to_string (), "(-100,-100;-100,0;0,0;0,-100)");
   EXPECT_EQ (r.selected_not_interacting (rr, 1, 2).to_string (), "(-100,-100;-100,0;0,0;0,-100)");
   EXPECT_EQ (r.selected_not_interacting (rr, 1, 4).to_string (), "");
   EXPECT_EQ (r.selected_not_interacting (rr, 2, 4).to_string (), "");
-  EXPECT_EQ (r.selected_not_interacting (rr, 2, 1).to_string (), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)");
+  EXPECT_EQ (db::compare (r.selected_not_interacting (rr, 2, 1), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)"), true);
   EXPECT_EQ (r.selected_not_interacting (rr, 3, 4).to_string (), "(0,0;0,200;100,200;100,0)");
 }
 
@@ -1867,21 +1868,21 @@ TEST(30b_interact_with_count_edge)
   r.set_merged_semantics (false);
 
   EXPECT_EQ (r.selected_interacting (empty).to_string (), "");
-  EXPECT_EQ (r.selected_interacting (rr).to_string (), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)");
+  EXPECT_EQ (db::compare (r.selected_interacting (rr), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)"), true);
   EXPECT_EQ (r.selected_interacting (rr, 0, 2).to_string (), "(0,0;0,200;100,200;100,0)");
   EXPECT_EQ (r.selected_interacting (rr, 1, 2).to_string (), "(0,0;0,200;100,200;100,0)");
-  EXPECT_EQ (r.selected_interacting (rr, 1, 4).to_string (), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)");
-  EXPECT_EQ (r.selected_interacting (rr, 2, 4).to_string (), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)");
+  EXPECT_EQ (db::compare (r.selected_interacting (rr, 1, 4), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)"), true);
+  EXPECT_EQ (db::compare (r.selected_interacting (rr, 2, 4), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)"), true);
   EXPECT_EQ (r.selected_interacting (rr, 2, 1).to_string (), "");
   EXPECT_EQ (r.selected_interacting (rr, 3, 4).to_string (), "(-100,-100;-100,0;0,0;0,-100)");
 
-  EXPECT_EQ (r.selected_not_interacting (empty).to_string (), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)");
+  EXPECT_EQ (db::compare (r.selected_not_interacting (empty), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)"), true);
   EXPECT_EQ (r.selected_not_interacting (rr).to_string (), "");
   EXPECT_EQ (r.selected_not_interacting (rr, 0, 2).to_string (), "(-100,-100;-100,0;0,0;0,-100)");
   EXPECT_EQ (r.selected_not_interacting (rr, 1, 2).to_string (), "(-100,-100;-100,0;0,0;0,-100)");
   EXPECT_EQ (r.selected_not_interacting (rr, 1, 4).to_string (), "");
   EXPECT_EQ (r.selected_not_interacting (rr, 2, 4).to_string (), "");
-  EXPECT_EQ (r.selected_not_interacting (rr, 2, 1).to_string (), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)");
+  EXPECT_EQ (db::compare (r.selected_not_interacting (rr, 2, 1), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)"), true);
   EXPECT_EQ (r.selected_not_interacting (rr, 3, 4).to_string (), "(0,0;0,200;100,200;100,0)");
 }
 
@@ -1957,21 +1958,21 @@ TEST(30c_interact_with_count_text)
   r.set_merged_semantics (false);
 
   EXPECT_EQ (r.selected_interacting (empty).to_string (), "");
-  EXPECT_EQ (r.selected_interacting (rr).to_string (), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)");
+  EXPECT_EQ (db::compare (r.selected_interacting (rr), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)"), true);
   EXPECT_EQ (r.selected_interacting (rr, 0, 2).to_string (), "(0,0;0,200;100,200;100,0)");
   EXPECT_EQ (r.selected_interacting (rr, 1, 2).to_string (), "(0,0;0,200;100,200;100,0)");
-  EXPECT_EQ (r.selected_interacting (rr, 1, 4).to_string (), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)");
-  EXPECT_EQ (r.selected_interacting (rr, 2, 4).to_string (), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)");
+  EXPECT_EQ (db::compare (r.selected_interacting (rr, 1, 4), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)"), true);
+  EXPECT_EQ (db::compare (r.selected_interacting (rr, 2, 4), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)"), true);
   EXPECT_EQ (r.selected_interacting (rr, 2, 1).to_string (), "");
   EXPECT_EQ (r.selected_interacting (rr, 3, 4).to_string (), "(-100,-100;-100,0;0,0;0,-100)");
 
-  EXPECT_EQ (r.selected_not_interacting (empty).to_string (), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)");
+  EXPECT_EQ (db::compare (r.selected_not_interacting (empty), "(0,0;0,200;100,200;100,0);(-100,-100;-100,0;0,0;0,-100)"), true);
   EXPECT_EQ (r.selected_not_interacting (rr).to_string (), "");
   EXPECT_EQ (r.selected_not_interacting (rr, 0, 2).to_string (), "(-100,-100;-100,0;0,0;0,-100)");
   EXPECT_EQ (r.selected_not_interacting (rr, 1, 2).to_string (), "(-100,-100;-100,0;0,0;0,-100)");
   EXPECT_EQ (r.selected_not_interacting (rr, 1, 4).to_string (), "");
   EXPECT_EQ (r.selected_not_interacting (rr, 2, 4).to_string (), "");
-  EXPECT_EQ (r.selected_not_interacting (rr, 2, 1).to_string (), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)");
+  EXPECT_EQ (db::compare (r.selected_not_interacting (rr, 2, 1), "(-100,-100;-100,0;0,0;0,-100);(0,0;0,200;100,200;100,0)"), true);
   EXPECT_EQ (r.selected_not_interacting (rr, 3, 4).to_string (), "(0,0;0,200;100,200;100,0)");
 }
 
diff --git a/src/db/unit_tests/dbRegionTests.cc b/src/db/unit_tests/dbRegionTests.cc
index bd3352be8..db2d9d296 100644
--- a/src/db/unit_tests/dbRegionTests.cc
+++ b/src/db/unit_tests/dbRegionTests.cc
@@ -653,16 +653,16 @@ TEST(15g)
   db::RegionCheckOptions options;
   options.metrics = db::Projection;
   options.opposite_filter = db::NoOppositeFilter;
-  EXPECT_EQ (r1.separation_check (r2, 40, options).to_string (),
-    "(100,0;100,300)/(90,300;90,0);(200,200;200,100)/(210,100;210,200)");
+  EXPECT_EQ (db::compare (r1.separation_check (r2, 40, options),
+    "(100,0;100,300)/(90,300;90,0);(200,200;200,100)/(210,100;210,200)"), true);
 
   options.opposite_filter = db::NotOpposite;
-  EXPECT_EQ (r1.separation_check (r2, 40, options).to_string (),
-    "(100,0;100,100)/(90,300;90,0);(100,200;100,300)/(90,300;90,0)");
+  EXPECT_EQ (db::compare (r1.separation_check (r2, 40, options),
+    "(100,0;100,100)/(90,300;90,0);(100,200;100,300)/(90,300;90,0)"), true);
 
   options.opposite_filter = db::OnlyOpposite;
-  EXPECT_EQ (r1.separation_check (r2, 40, options).to_string (),
-    "(200,200;200,100)/(210,100;210,200);(100,100;100,200)/(90,300;90,0)");
+  EXPECT_EQ (db::compare (r1.separation_check (r2, 40, options),
+    "(200,200;200,100)/(210,100;210,200);(100,100;100,200)/(90,300;90,0)"), true);
 }
 
 TEST(15h)
diff --git a/testdata/algo/device_extract_au10.gds.5 b/testdata/algo/device_extract_au10.gds.5
new file mode 100644
index 000000000..5a077c2fb
Binary files /dev/null and b/testdata/algo/device_extract_au10.gds.5 differ
diff --git a/testdata/drc/drcSimpleTests_20.drc b/testdata/drc/drcSimpleTests_20.drc
index 0558a7940..b58a13732 100644
--- a/testdata/drc/drcSimpleTests_20.drc
+++ b/testdata/drc/drcSimpleTests_20.drc
@@ -1,7 +1,7 @@
 
 # Interact with count
 
-has_unbounded_range = ((RUBY_VERSION.split(".").map(&:to_i) <=> [2,7,0]) <= 0)
+has_unbounded_range = ((RUBY_VERSION.split(".").map(&:to_i) <=> [2,7,0]) >= 0)
 
 source($drc_test_source, "TOP")
 target($drc_test_target)
diff --git a/testdata/drc/drcSimpleTests_26.drc b/testdata/drc/drcSimpleTests_26.drc
index 549641cbb..83d9d49e5 100644
--- a/testdata/drc/drcSimpleTests_26.drc
+++ b/testdata/drc/drcSimpleTests_26.drc
@@ -1,5 +1,5 @@
 
-has_unbounded_range = ((RUBY_VERSION.split(".").map(&:to_i) <=> [2,7,0]) <= 0)
+has_unbounded_range = ((RUBY_VERSION.split(".").map(&:to_i) <=> [2,7,0]) >= 0)
 
 source $drc_test_source
 target $drc_test_target